auto merge of #15709 : hirschenberger/rust/issue-14269, r=cmr

auto merge of #15709 : hirschenberger/rust/issue-14269, r=cmr

Fixes missing overflow lint for i64 #14269

The `type_overflow` lint, doesn't catch the overflow for `i64` because the overflow happens earlier in the parse phase when the `u64` as biggest possible int gets casted to `i64` , without checking the for
overflows.
We can't lint in the parse phase, so we emit a compiler error, as we do for overflowing `u64`

Perhaps a consistent behaviour would be to emit a parse error for *all*  overflowing integer types.

See #14269